<template>
  <view>
    <!-- 使用自定义的搜索组件 -->
    <view class="search-box">
      <my-search @click="gotoSearch"></my-search>
    </view>
    <!--轮播图区域-->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
      <swiper-item v-for="(item,i) in swiperList" :key="i">
        <navigator class="swiper-item" :url="'/subpkg/goods_detail/goods_detail?goods_id='+ item.goods_id">
          <image :src="item.image_src" mode=""></image>
        </navigator>
      </swiper-item>
      </swiper>
    <!-- 分类导航区域 -->
      <view class="nav-list">
      <view class="nav-item" v-for="(item, i) in navList" :key="i" @click="navClickHandler(item)">
      <image :src="item.image_src" class="nav-img"></image>
      </view>
      </view>
      <!-- 楼层区域 -->
      <view class="floor-list">
        <!-- 楼层 item 项 -->
        <view class="floor-item" v-for="(item, i) in floorList" :key="i">
          <!-- 楼层标题 -->
          <image :src="item.floor_title.image_src" class="floor-title"></image>
          <!-- 楼层图片区域 -->
          <view class="floor-img-box">
            <!-- 左侧大图片的盒子 -->
            <navigator class="left-img-box" :url="item.product_list[0].url">
              <image :src="item.product_list[0].image_src" :style="{width: item.product_list[0].image_width + 'rpx'}" mode="widthFix"></image>
            </navigator>
            <!-- 右侧 4 个小图片的盒子 -->
            <view class="right-img-box">
              <navigator class="right-img-item" v-for="(item2, i2) in item.product_list" :key="i2" v-if="i2 !== 0" :url="item2.url">
                <image :src="item2.image_src" mode="widthFix" :style="{width: item2.image_width + 'rpx'}"></image>
              </navigator>
            </view>
          </view>
        </view>
      </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        //轮播图的数据列表
        swiperList:[],
        //分类导航的数据列表
        navList:[],
        //楼层的数据
        floorList:[]
        
      };
    },
    onLoad(){
      //调用方法：获取轮播图的数据
      this.getSwiperList(),
      this.getNavList(),
      this.getFloorList()
    },
    methods:{
      async getSwiperList(){
        const {data:res}=await uni.$http.get('/api/public/v1/home/swiperdata')
        //请求失败
        if(res.meta.status!==200)return uni.$showMsg()

        this.swiperList=res.message
        uni.$showMsg('数据请求成功！')
      },
     async getNavList(){
       const { data:res }=await uni.$http.get('/api/public/v1/home/catitems')
       if(res.meta.status!==200)return uni.$showMsg()
       this.navList=res.message 
     },
     // nav-item 项被点击时候的事件处理函数
     navClickHandler(item) {
       // 判断点击的是哪个 nav
       if (item.name === '分类') {
         uni.switchTab({
           url: '/pages/cate/cate'
         })
       }
     },
     //获取楼层首页数据的方法
      async getFloorList() {
           const { data: res } = await uni.$http.get('/api/public/v1/home/floordata')
           if (res.meta.status !== 200) return uni.$showMsg()
           this.floorList = res.message
           },
           // 获取楼层列表数据
           async getFloorList() {
             const { data: res } = await uni.$http.get('/api/public/v1/home/floordata')
             if (res.meta.status !== 200) return uni.$showMsg()
           
             // 通过双层 forEach 循环，处理 URL 地址
             res.message.forEach(floor => {
               floor.product_list.forEach(prod => {
                 prod.url = '/subpkg/goods_list/goods_list?' + prod.navigator_url.split('?')[1]
               })
             })
           
             this.floorList = res.message
           },
           gotoSearch() {
             uni.navigateTo({
               url: '/subpkg/search/search'
             })
           }
    },
  }
</script>

<style lang="scss">
  swiper{
    height:330rpx;
      .swiper-item,
      image{
        width: 100%;
        height:100%;
      }
  }

.nav-list {
  display: flex;
  justify-content: space-around;
  margin: 15px 0;

  .nav-img {
    width: 128rpx;
    height: 140rpx;
  }
}

.floor-title {
  height: 60rpx;
  width: 100%;
  display: flex;
}
.right-img-box {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
}

.floor-img-box {
  display: flex;
  padding-left: 10rpx;
}
.search-box {
  // 设置定位效果为“吸顶”
  position: sticky;
  // 吸顶的“位置”
  top: 0;
  // 提高层级，防止被轮播图覆盖
  z-index: 999;
}

</style>
